Calculating machine



Oct. 4, 1938. c. scHLUNs CALCULATING MACHINE' Filed Jan. 10, 1928 3 Sheets-Sheet l Oct. 4, 1 938.

c, scHLUNs CALCULATING MACHINE Filed Jan. 10, 1928 3 Sheets-Sheet 2 Oct. 4, 1938.. c. scHLUNs CALCULATING MACHINE Patented Oct. 4, 1938 UNITED STATES PATENT OFFICE CALCULATING MACHINE Zella-Mehlis, German of Germany Application January 10,

y, a joint-stock company 192s, serial No. 245,789

Germany January 12, 1927 24 Claims.

This invention refers to typewriting calculating machines and in particular to the printing mechanism for the clear sign which indicates the zero position at the transverse counting mechanism. In accordance with this invention the printing mechanism for the clear sign is automatically operated in the zero position of the calculating mechanism and in such a manner s to be dependent upon the zero position and u the movement of the paper carriage, and in a preferred construction of the subject matter of the invention special means are provided for the operation of the printing mechanism of the clear sign. By this means it is possible to produce with absolute reliability the actuation of the device-for the printing of the clear sign, inasmuch as the power may be so arranged as to be suiiiciently high for this purpose. The operation of the printing mechanism is preferably effected by 20 a power which has been accumulated in the printing operation of the clear sign. The power member is preferably connected to the printing mechanism ofthe clear sign by way of a feelermember adapted to move toward the numberrollers and which is so arranged and constructed that in case one or more of the number-rollers are not in the zero-position it will prevent the action of the power member, so that an impression of the clear sign will take place only when 30 all the number-rollersv of the calculating device are in the zero position. l In the writing position of the paper carriage corresponding to the clear sign a locking instrumentality is also simultaneously moved into the 35. operating position by the power operating the vprinting mechanism for the clear sign, the said locking instrumentality preventing the transferring=of calculating quantities into the calculating device, so that the transferring of the values of the particular position of the number-rollers is prevented in vthis manner. 'I'his locking instrumentality is also preferably operated upon exceeding the capacity of the 'calculating device.

'I'he invention will be more particularly described with reference to the accompanying drawings showing by way of exempliiication several forms of embodiment ofthe principles of the invention.

In the drawings: Fig. 1 is an elevation with parts insection showing a power-driven typewriting machine in which al1 parts not necessarily belonging to the invention areomitted, so as not to interfere with the clearness of illustration. Fig. 2 is a front elevation of the machine as these quantities in this position independent of (Cl. 23S-59) viewed in the direction of the arrow A of Fig. 1. Fig. 2a is a side view of the left-hand marginysetter seen in the direction of the arrow A1 of Fig. 2. Fig. 2b is a detail to be referred to, and showing a fractional view of the margin-setter 5 and particularly the pawl 3b on an enlarged scale in the position in which the pawl is rendered inoperative by a pin x.

Fig. 3 is an elevation showing the locking means of the transverse counting mechanism as viewed 10 in the direction of the arrow B of Fig. 2, the left-hand side wall of the transverse counting mechanism being removed. Fig. 4 is an elevation showing the counting mechanism with the locking members in the operative position. Fig. 5 15 is a perspective view showing particularly the feeling members arranged on the transverse counting mechanism. Fig. 6 is a modified construction of different details of the device in perspective view and to be more particularly re` 20 ferred to in the specification. l

The key levers 2 of the calculating machine are rockingly disposed in the frame of .the machine, so as to be rotatable on the shaft I, each of these key levers 2 being provided with a key 3. 25 By means of a tensional spring 6 which on.the one hand is operatively secured to a projection 4 of the key lever 2 and on the other hand to the machine frame at 5, the key lever 2 in its normal position is rotatably influenced in the anti-clock- 30 wise direction with relation to its shaft i, so that it will rest with its projection l against the stopping member 1. Upon the depression of thel key 3 'the rear leg 2a of the key lever 2 will release the pawl 8 which is displaceably arranged on the 35 4 cam-disc 9 by means of the rivets lli, and is continuously forced in the direction of the arrow l2 by means of the compression spring Il. In consequence thereof the pawl member 8 will move in the direction of the arrow l2 and its projecting 40 part i3' will become engaged with the driving wheel I5 which is secured on the driving shaft Il adapted to be continuously rotated in the direction of the arrow c. ABy this means the camdisc 9 is coupled to the driving shaft I4, so as to 45 be adapted for one rotation. l

Counting slides I6v are displaceably arranged for vertical movement in the frame of the machine and are continuously forced downwards by means of tenslonal springs Il which are respectively securedon each of the slides and on the machine frame, so that the slides Ii with the rollers I8 secured thereto will always rest against the respective cam-discs corresponding thereto.

Upon the depression of a key 3 the corresponding 55 slide I6 will be lowered in consequence of the rotation of the corresponding cam 9, the downward and upward movement of the counting slides I6 causing in the well known manner all the disengagements and transferring movements required.

for the calculation in the counting mechanisms. The arrangement in this connection is such that upon the descent of the counting slides I6 an inclined surface I9 arranged thereonv will operate the locking bar 28 which by means of its shaft 22 is rockingly disposed on two laterally disposed levers 2| (only one of which is shown in Fig. 1), the locking bar being drawn by the spring 23 against the stop 24, which position corresponds to the normal position of the parts.

The levers 2| carrying the locking bar 20 are keyed to the rotatably arranged shaft 25. When the counting slide I6 with its incline I9 acts upon the locking bar 20, the shaft 25 is rocked clockwise and in consequence thereof the unlocking lever 26 which is secured to the shaft 25 acts in the well known lmanner on the locking levers 28 arranged in the vertical counting mechanism 21, so that the corresponding vertical counting mechanism is unlocked. The shaft 25 carries moreover a lever 29 adapted to cooperate with the lever 3| mounted upon the shaft 30. By means of the rotation of the shaft 25 above referred to the lever 29 is accordingly rocked clockwise and will thereby and by means of the lever 3I cause the rotation of the shaft 30 and the rocking of an unlocking lever 32 secured to the shaft 30 in the anticlockwise direction. This unlocking lever 32 produces in the well known manner the unlocking of the transverse counting mechanism 33.

lIn bearings on both sides of the machine frame is rotatably mounted the shaft 34, upon which a plurality of levers 35 are keyed in certain denite spaced relation to each other. These levers 35 are adapted for the paage of the shafts 36vand 31 traversing the levers. 'I'he shaft 36 serves merely for the purpose of stiening the entire system formed by the shafts 34, 36 and 31 and the levers 35, while the shaft 31 is adapted to cooperate with the several counting slides I6.

Each of these counting slides I6 has a'slot 38 of substantially curved shape. If after the depression of a calculating key the cam-disc 9 participates in the rotation of the driving shaft I4, so that in consequence*l thereof the corresponding slide I6 descends the curved slot 38 of the slide actsupon the shaft 31 and thereby rocks the frame 34, 35, 36, 31 and consequently also the shaft 34 in the anticlockwise direction to an extent corresponding to the'value of the depressed key. The rocking motion corresponding to the value of such key will be regulated in the otherwise well known manner by the different inclination of the slot 38 of the several counting slides I6. In order to transfer this rocking motion to the counting mechanisms a toothed segment C is disposed upon the shaft 34, the -said segment are arranged on each side. of the machine, such as shown in United States Patent 1,582,788 andA designated |31 and I I 4 respectively in that patent.

On th'ese margin-Setters lugs or projections 08 and 09 respectively are provided which in the patent referred to are respectively designated |36 and I I3. Upon moving the carriage W from left to right this movement will be limited by the engagement of' the lug 83 against the surface c of the shoe d. 'I'his shoe d is secured to the keylocking bar T adapted to be displaced towards the left and in the downward direction along the frame of the machine. While the carriage is moving stepwise from right to left the lug 09 of the right hand margin-setter 01 will nrst move up to the corner d1 of the shoe d without exerting any action upon it. Upon the next step of the carriage movement however the lug 83 will ascend the inclined edge d2 and will thereby depress the shoe d and Ainasmuch as the shoe d is secured to the key locking bar T this bar will also be depressed. At its left end the bar T has a slot a adapted for the engagement of a pin b on a bar e which is vertically displaceable in the bearing eyes c1, cz. On this bar e a setting ring f is secured and between the ring and the bearing eye cz the spring g is disposed which in the normal position of the parts retains the key-locking bar Tin the position shown in Fig. 2, that is tosay, with its end blocked by the impinglng edge 9a of the frame. To the lower edge of the bar e and by means of the pin-and-slot connection h, h1 (Figures l and 2) an elbow lever y is pivoted which is adapted for rocking movement-on the stud i and the arm i1 of which will retain the arm kilFig. 2) of a locking lever k in the position shown in Fig. 1 in full lines against the action of the spring l.

I The yoke-shaped lever k is rockingly mounted atv the points Ica, ks. In this position of the yoke k the writing keys' m are freely movable as appears from Fig. l of the drawings. Upon the rocking. of the lockingor arresting yoke k into the position shown in dotted lines in Fig. l of the drawings an arresting member m1 secured to a key mwill become engaged with the arresting yoke or lever k, when an attempt is made to depress the key m, so that the depression of the particular key m becomes impossible.

At the right hand end the key-locking bar T is provided with a slot n by means of which the bar T may be. guided on a screw m secured to the frame of the machine. At its right hand end a lever o1 is moreover pivotally connected to the bar T at the point o, the said lever being onthe other hand-linked at p to a lever p2 secured to the rotatable shaft p1. Upon the shaft p1 a lever q is secured which by means of a stud q1 is adapted to engage with an annular groove n ofthe continuously rotated coupling section r of a tooth-coupling or clutch. The driven member r2 is formed to constitute an operating drum from which a band t leads to the well known line-shifting lever not shown in the drawings and drawings, in such a manner that the key-locking bar T will have the tendency to move towardsV the left from the position shown in Fig. 2. It is however prevented from following this tendency in the normal position of the parts by the stop la.

Now when the shoe d is depressed by the lug l5 of the right hand margin-setter I1, the lefthand extremity of the key-locking bar T and the bar ein pursuance thereof are likewise depressed contrary to the action of the spring g and in this movement the key-locking bar is released from the stop 9a. This will cause the elbow lever 1' which is connected to the bar e to be likewise rocked clockwise from the position shown in Fig. 1, and the locking-yoke k will thereby be moved to the dotted line position, and by this means all the keys m are locked to prevent depression thereof.v Simultaneously therewith the disengagement of the key-locking bar T from the stop 9a will release the spring v and will cause the key-locking bar T and the driving clutch-section r to be displaced towards the left from the position shown in Fig. 2. In consequence thereof the drum n is rotated and will wind up the band t. Inasmuch as this band is operatively connected to the line-shifting lever which in its turn is of course secured to the carriage, this action will first effect the line adjustment and then the return of the carriage, that is to say, the driving of the carriage towards the right. Near the end of this movement of the carriage to the right the left-hand margin-setter l5 with its lug 05 will become engaged with the edge c of the shoe d, by which means the key-locking bar T is displaced towards the right contrary to the action Y of the spring v. This will cause the lockingyoke k to re-assume the position shown in full lines in Fig. 1 and the driving coupling section r becomes disengaged from the driven coupling section r2, and in consequence thereof the keys are released from their inoperative locked position and the carriage-pulling movement is interrupted.

I shall now proceed to describe the features constituting the main novelty of this invention.

In the frame of the machine and by means of a screw I! (Fig. 2) an elbow lever 4l is disposed, the horizontal leg of which carries a roller 4I. This roller projects into the path of a pawl 43 rockably arranged on a shaft or stud 42 at 'the front side of the vertical counting mechanism and directly behind the units position. A pulling spring 44 is operatively connected to the angular lever 4l and by means of the bar 45 which is pivotally connected thereto by the screw 45 the angular lever 4I is connected with the lever 41 which is rockably arranged on the stud 4l secured to the frame of the machine.' 'I'he roller 4I projects likewise into the path of the pawls 45a and 43h which, the same as the-pawl 45, are rockable respectively on the studs 42, 42a and 42h and on the front side of the counting mechanism 43 and Il and on the margin-setter I6 respectively. 'Ihe margin-setter I5 is provided for this purpose with a forwardly projecting arm lia (Fig. 2a) upon which the pawl 43h is disposed.

Below the' bracket 5l (Fig. l) supporting the transverse counting mechanism 4l, and in suitable bearings. a shaft 5I is rotatably mounted only perform a partial rocking movement.

upon which a lever 52 is rigidly secured adapted for cooperation with the lever 41 above referred to. The lever 41 carries a lug 41a (Fig. 2) which rests against the lever 52 and by this means will retain the system of levers 41, 45, 4l above mentioned in the position of rest corresponding to Fig. 2 of the drawings and contrary to the action of the spring 44. Upon the shaft 5I two additional levers 5l and 54 are rigidly secured (Figures l and 2) which at their free ends are connected by means of a U-shaped bar 55. 'I'his U-shaped bar 55 is positively connected by means of the guide-roller 55 to a slide 51 displaceably disposed at the front wall of the transverse counting mechanism and which by means of the scews 5I and 55 is linked to the legs 5l and 5l of the preferably rake-like feeling bar 52 (Figures 1 and 5). Inasmuch as the transverse counting mechanism as well as the vertical counting mechanism move temporarily with the carriage from one position to another in the known manner, and in view of the fact that the extent of the path of this temporary movement corresponds at most to the width of the transverse counting mechanism, the length of the U-shaped bar 55 should be such that the roller 55, in every position of the transverse counting mechanism, will remain in engagement with the U-shaped bar 55. The legs 54 and 5I of the feeler bar 52 are pivoted to the side walls of the transverse counting mechanism by means of the screws 53, 64 pass- -ing through the bar 52. These legs 60 and 6i are continuously pressed in the clockwise direction by a spring 55 operating thereagainst, and by this means the slide 51 is moved downwards and the shaft 5| is rotated by the intermediary of the roller 55, the U-shaped bar 55 and of the levers 53, 54, so that the lever 52 will be rocked clockwise. This rocking movement, however, is ordinarily prevented by the fact that the level- 52 rests against the lever 41, and by this means the feeling mechanism is retained in its normal position.

The rake-like feeling bar 52 cooperates with the driving wheels 55 of the number-rolls 61 (Figures l and 4). In these rollers that tooth which confronts the feeling bar 52 in the zero 'position of the number roll 51 is shortened, so as to admit of a full oscillation of the feeling bar 52. This rocking movement of the feeling bar 62 is, however, onLv possible, provided the bar is confronted by the shortened teeth of all the number rolls, that is to say, only in case all of the number rolls are in the zero position. In case, however, not all-'of the shortened teeth are opposite the feeling bar 52, the said bar 62 can The purpose of this partial rocking movement will be described andl explained hereinafter.

If now the carriage W of the type-writing ma-A chine is moved from right to left, and if in this movement the pawl 43 rockably mounted by means of the stud 42 at the point of the last vertical counting mechanism (Figure 2) strikes against the roller 4l, the elbow lever 40 is rocked on its pivoting stud 35 contrary to the action of the spring 44, and by this means and by the intermediary of the bar 45 the lever 41 is likewise rocked. The levers 5l and 6l are now rocked by the springs 55 on their axes ,53 and 54. This action causes the slide 51 to be lowered, and by means of the Ufshaped bar 55, andv the levers 5 54 the lever rotates theshaft 5i. t

Upon the shaft 5i a lever 1I is also rigidly securedwhich-bymeansof thepulling spring i is operatively connected to a lever 12 loosely and rotatably disposed on the shaft 5| the position of which with relation to the lever 10 depends on the position of the lug 13 provided on the lever 12. If the shaft 5| is rocked in the manner above described by the action of the springs 65, the levers 10 and 12 will likewise be rocked in the clockwise direction. In case during this movement the number rolls 61 of the transverse counting mechanism are all in the zero position, the leverv10 will be free to be rocked through a full amplitude, and ,will act with its stud 14 upon the curved slot 15 of the key-less lever 16. In consequence thereof this lever 16 is rocked clockwise on its, pivoting 'stud 11 contrary to the action of the spring 18,

and in this movement the follower-pawl 19 operatively disposed on the key-less lever 16 acts in the well known manner upon the drawing hook 80 and causes it to become engaged with the driving shaft 8| continuously rotating in the direction of the -arrow d. By this means the intermediate lever 82 is rocked on the stud 83 in the clockwise direction, and thus the type-lever 84 carrying the clear sign is caused to strike the platen roller 85 in the well known manner, so that the "clear sign K1 is printed.

The lever 12 in view of the operative connection of the parts 1|, 13A participates in the movement of the lever 10, andby this means causes the displacement of the bar 86 in the direction of the arrow A, so that this bar'86 with its longitudinal i slot 81 will rest against the stud 88 provided on the intermediate lever 82. If now the intermediate lever 82 is rocked clockwise, thereby causing the type lever 84 to strike the platen, the said lever 82 with its stud-88 acts upon the bar 86 and causes it to move in a direction opposite to the arrow A, so that the lever 12 is rocked anticlockwise. The spring 1| is selected of greater force than the springs 65, and upon the movement of the bar 86 the spring 1| carries the lever 1|) along in its movement, so that the shaft 5| is rocked anticlockwise as seen from the representation of Figure 1,- and the springs 65 are tensioned thereby and the key-less lever 16 is raised again. l

During this procedure the carriage W makes one step towards the left in the well-known mannen-which causes the pawl 43 to become disengaged from the -roller 4|, so that the spring 44 becomes free to act upon the lever '40, and in consequence thereof and by means of the bar 45 locks the lever 52 againjso that all .the parts will re-assume their normal positions, shown in Figures 1 and 2 of the drawings. The spring 1| will then serve for the absorption of the very high degree of energy imparted bythe intermediate lever 82 to the bar 86, and thereby obviates injury to the parts. The operative length of the bar 86 is moreover adjustable by the screw-'andslot connection 86a, so as to permit regulation and adjustment of the operation of the spring 1|. During the stepwise movement of the carriage `above referred to the lug 09 of the right-hand margin-setter 01 has also moved upwards upon the inclined edge d2 ofthe shoe d, and has thereby caused the carriage-returning means, the lineshifting means and the key-locking means to be operated in the manner hereinbefore particularly described. Thus, if -the "clear sign Ki is printed, the step-movement of the carriage, which results therefrom, causes-the carriage-returning means to be operated and the carriage is automatically moved back towards the right. In the beginning of the carriage-returning movement arcaica 43a of the first counting mechanism 03 passes 'inoperatively clear of the roller 4|, inasmuch as it is arranged in the same manner as the pawl Y 43. Towards the end of the carriage-returning movement hcweve'r the pawl 43h which is oppositely arranged with relation to the pawls 43 and 43a, and which is arranged on the margin-setter 06 becomes engaged with the roller 4|, depressing it, so that in the manner above described a printing instrumentability for the printing of vthe clear sign is again made to loperate and the "clear sign is printed, as-shown at K2, at the commencement of the next line. Immediately thereafter however the lug 08 of the left-hand margin-setter 06 strikes against the edge c of the shoe d, andin consequence thereof the carriagereturning movement is'arrested in the manner above described. It follows from what has been heretofore stated that during the stepwise movementof the carriage towards the left the pawl 43a of the counting mechanism 03 will cause the printing of a clear sign K3 in the same manner as shown to occur by means of the pawl 43 of the counting mechanism 05. Should the clear sign K2 be not desired, it is only necessary to replace the rider 06 by an ordinary margin-setter unprovided with the arm 86a and the pawl 43h.

In this case merely the "clear signs K3 and K1 will be printed. If however the printing of the clear signs K2 and K1 is desired, only the counting mechanism |13 carrying the pawl 43a has to be exchanged by an ordinary counting mechanism. 'I'he operator is therefore at liberty t'o cause the clear signs to be automatically printed by the machine at any desired place. It is'obvious moreover that the pawl 43 may also be disposed on the rider 01 instead of being arranged on the counting mechanism 85, the rider in this case being provided with an arm 06a in the same manner as the rider 06. Besides, each of the pawls, 43, 43a, 43h may be rendered inoperative by moving it into the position shown in Figure 2b (with respect to the pawl 43h) against the action of its spring, in which position the pawl is retained by a pin :c which is inserted in a corresponding hole of the pawl and of the rider.

In order to prevent quantities from being carried and transferred into the counting mechanism during the automatic recording of a clear sign, the following arrangement is provided:-

In the counting mechanism a locking flap 98 rockable on the shaft or stud 88 is provided which ordinarily, by means of a spring not shown in the drawings, assumes the position according to Figures 1, 3 and 5. This locking ap 90, as is well known, at each transmission of a value or quantity into the counting mechanism, is moved by the end .Sla ofthe particular unlocking lever 9| into the position shown in Figure 4 of the drawings, the said lever 9| acting against the downwardly projecting leg 92 of the locking flap 98, while the horizontal leg 93 of the iap places itself against the unlcking levers which are in the position ofrest, as appears from Figure 4 of. the drawings. 'I'he parts 80, 9| and 93 are of well known con- 1,270,471 in Fig. 14- by the numbers 246,248 and vus 239 and their action is fully described in that patent on page 8 under the heading The totalizers. Now, the arrangement is such that the screws 59, 59 which constitute the pivoting shafts for the connection of th levers 69, 6| with the slide 51 are provided with studs 59a, 59a which extend into the counting mechanism through slots in the side walls of the counting mechanism. The locking flap 99 is provided with corresponding recesses 94, 95 confronting the studs 59a, 59a. In the normal position of the slide 51 and of the feeler bar 62, and in case the locking flap 99 is rocked upon the carrying of a quantity-value into'the counting mechanism, the studs 56a and 59a enter the slots 94 and 95, so that the iiap 99 may be freely oscillated. If however, the feeling instrumentality is in the operating position in which the slide 51 and byitsmovement the pivoting studs 56a and 59a are moved downwardly, the studs become removed from the path of the slots 94 and 95, so that the locking flap 99 is prevented from oscillating. In consequence thereof the particular locking lever 9| is secured against oscillation and accordingly also the unlocking lever 32, and the levers 3|, 29 and 2 I. The locking bar 29 is therebyV likewise prevented from oscillation, so that the counting slide I6, in spite of the striking of a calculating key and in spite of the resulting rotation of the corresponding cam disc 9 cannot move downwards, inasmuch as its edge |9 rests against the locking bar 29. The transmission quantities during the automatic printing of the "clear sign is therefore rendered impossible.

Furthermore, the transfer of quantities should also be prevented, in case the transverse counting mechanism has not been set to zero in consequence of a mistake in the writing up of the quantity or value. In this case any normal tooth of a number roll 61 upon the release of the lever 52 by the lever 41 will prevent complete rocking of the feeling bar 62, so that this bar will only perform a partial oscillation. In view of the fact that then the lever 19 will also be partially rocked, the slot 15 provided in the key-less lever 16 is of such shape that this rocking movement of the lever 19 does not influence the key-less lever 16. In view thereof the printing of the clear sign will not occurin all those cases in which the transverse counting mechanism is not in the zero position; and in case the "clear sign K1 is to be printed, the stepwise movement of the carriage following the sign and the return of the carriage consequent thereupon are likewise prevented, and by this means the operator is warned that he has not properly emptied the transverse counting mechanism. The partial outward rocking of the feeling bar 62 is however suiiicient to cause the disengagement of the studs 58a, 59a from the path of the slots 94, 95, so that there is no possibility of a. rocking movement of the locking flap 99 and of the locking lever 9|, inasmuch as the locking flap 99 places itself against the studs 56a and 59a. Upon the striking of any calculatingkey the camdisc 9 will therefore be given one rotation, but the corresponding counting slide I9 will be locked by the bar 29 in the manner above described. In order to unlock these arresting means the slide 51 is provided with an outwardly bent projection 51a. By raising this projection the studs 56a and 59a are returned to the path of the slots 94, 95, while the lever 41 again places itself over the lever 52, so that the locking ap 99 becomes again freely rockable. l

The form of execution shown in Figure 6 of the drawings is distinguished from the exemplification just described by the fact that the locking iiap 99 lemployed for the prevention of the movement of the counting slides is dispensed with, so that the -studs 58a and 59a, as well as the slots 94 and 95 are no longerrequired. 'Those parts of the modification according to Figure 6 which correspond to the ones already mentioned are designated in the following description with the samereference letter followed by the index ".r.

In accordance with the modification of Figure 6 the unlocking lever 922: constitutes an elbow-lever.

Upon the lever 521: being released by the lever 41.1: the projection 52h provided on the lever 52x is moved into the path of movement of the vertical arm 32h of the lever 32x, by which means the rocking of the lever is prevented, and consequently, as above described, the downward movement of the counting slide cannot take place. 'I'he locking device of the counting slides |6 may be of diierent construction, the arrangement being such that said locking device is adapted to arrest the movement of any part which prevents the operation of the counting slides |6 or of the value-registering elements upon the actuation of the value-keys.

Means are also provided to eiect the locking of the counting mechanism in case the capacity thereof has been exceeded. With this end in view a disc 99 with three projections or cams 91 is provided adjacent the driving wheel 96 farthest to the left, which has 30 teeth (Figures 3 and 4). The said projections are .uniformly distributed on the periphery in such a manner that they will become operative whenever the number roll 61 which happens to be furthest to the left is changing from 9 to 0, or from "0 to "9. In the position shown in Figure 3 the projections 91 are shown in the inoperative position. These projections or cams cooperate with a lever |99 rockably disposed on a shaft or stud 99 the terminal lug |9| of which acts as a feeler by moving along the said cam disc 99, while the projection |92 of the lever 99 cooperates with a projection or lug |95 provided on a lever |94 which is pivoted on a stud |99. Both levers |99 and I94are acted upon by the common pulling spring |96 in the anticlockwise direction. The lever |94 is provided with an elongated hole |91 in which the stud |96 is engaged, so as to restrict the movement of the lever |94. Moreover a handle |99 vor the like is provided on the lever |94 which projects from the counting mechanism towards the front side.

Upon going beyond the value 0 toward 9 or from "9 to "0 on the number roll the particular cam 91 in consequence of the engagement of the cam or projection with the lug |9| will rock the lever |99 on the stud 99 contrary to the action of the spring |96, while the projection |92 becomes disengaged from the projection |95 of the lever |94. This lever |94 will now perform a rocking movement on the axis |93 and assumes the position shown in Figure 4, in which position the shoulder or projection which is formed by the notch or recess ||9 places itself against the locking flap 99 which has been rocked by the particular operating lever 9|, 9| a, the locking flap 99 being thereby prevented from returning so that it cannot release the remaining unlocking levers 9|. It has now become impossible to introduce or .transfer into, or to withdraw'another quantityvalue from the counting mechanism. If it is desired to disengage the locking device, it is only necessary to manually move back the lever into its position of rest shown in Figure 3 by operating the handle |99.

This arrangement may, oi course, be provided both on the transverse counting mechanism of the calculating typewriting machine, as well as on each verticalcounting mechanism. It may moreover be employed in connection with stationary counting mechanisms.

The invention is, of course, susceptible of other modifications and changes in various particulars without departing from the spirit and scope of the linvention, except as otherwise stated in the accompanying claims.

1. In a machine of the class described, a counting mechanism, a traveling paper carriage, a

clear" sign printing mechanism, automatic operating means for said printing mechanism, means controlled by said. paper carriage in its travel for starting said operating means, and means controlled by said counting mechanism for arresting said operating means when said counting mechanism is not in a certain condition.

2. In a machine of the class described, a counting mechanism, a traveling paper carriage, a clear sign printing mechanism, automatic operating means for said printing mechanism, means controlled by said paper carriage in its travel for starting said operating means, and a feeler controlled by said counting mechanism and adapted to arrest said operating means when the counting wheels of said counting mechanism are not in zero position.

3. In a machine of the class described, a counting mechanism, a traveling paper carriage, a clear" sign printing mechanism, automatic operating means for said printing mechanism, means including an adjustable lug on said paper carriage for starting said operating means, and means controlled by said counting mechanism for arresting said operating means when said counting mechanism is not in a certain condition.

4. In a machine of the class described, a counting mechanism, a traveling paper carriage, a clear sign printing mechanism, automatic operating means for said printing mechanism, means for starting said operating means including a lug on said paper carriage adjustable longitudinally thereof and also adjustable to an inoperative position, and means controlled by said counting mechanism for arresting said operating means when said counting mechanism is not in a certain condition.

5. In a machine of the class described, a counting mechanism, a paper carriage, line shifting and carriage returning means, printing mechanism including a set of keys and a clear sign printing mechanism, key locking means, automatic operating means for said clear sign printing mechanism, means controlled by said carrlage for starting said operating means, and means `whereby the operation of said clear sign printing mechanism'controls said line shifting and carriage returning means and said key locking means.

6. In a machine of the class described, a counting mechanism, a paper carriage, line shifting and carriage returning means, printing mechanism including a set of keys and a clear sign printing mechanism, key locking means, automatic operating means for said clear sign printing mechanism, and a rider on said carriage adapted to engage said operating means to start key locking means simultaneously ingdependence upon the movement of said carriagegz' 7. In a machine of the class described, a counting mechanism, a traveling paperftarriage, carriage returning and line shifting means, a clear sign printing mechanism, autonaticgoperating means for said printing mechanism, means rendering the operation of said printing mechanism dependent upon the condition of said counting mechanism, and means whereby said-operating means is automatically started upon completion of the line shift and return movement of said carriage.

8. In a machine of the class describedfa coun ing mechanism, a traveling paper carriage, a

clear sign printing mechanism, normally tensioned and locked automatic operating means for said printing mechanism, means controlled by movement of said carriage for releasing said operating means, and means whereby said operating means is reset by said printing mechanism.

9. The combination with amachine` as described in claim 8 of a feeler coordinated with said counting mechanism and connected to said operating means so as to restrain'the same from operation unless the numeral indicators of said voperative movement unless the numeral indicators of said counting mechanism are all at zero, and a normally ineiective locking device for said counting slides connected with said engaging means and adapted to be moved to operative position thereby.

11. In a machine of the class described, a counting mechanism, means for introducing values into said counting mechanism, a clear sign printing mechanism, normally prepared power driven operating means therefor, a member having a progressive movement during the normal operation of the machine, means adapted to be actuated by said member for starting said operating means, feeler mechanism cooperating with said counting mechanism and adapted to restrain said operating means when the counting mechanism is not at zero, and normally ineffective locking means for said value introducing means adapted to be rendered effective by said operating means when the latter is released.

12. I'n a machine of the class described, a counting mechanism, means for introducing values into said counting mechanism, a clear" sign printing mechanism, normally prepared power driven operating means therefor, means for releasing said operating means at a denite stage in the normal operation of the machine, feeler means controlled by said counting mechanism vto arrest said operating means before its motion to operatesaid printing means is com- .pletedl when said counting mechanism is not in zero condition, andnormally ineiective locking means for said value introducing means adapted to be rendered effective by the movement of said y operating means prior to its arrest by said feeler means.

13. In a machine of the class described. a

` counting mechanism, means for introducing values into said counting mechanism, a clear sign printing mechanism, normally tensioned and latched operating means for said printing mechanism, means for releasing said operating means at a definite stage in the normal operation of the machine, feeler means controlled by said counting mechanism to arrest said operating means before its motion to operate said printing means is completed when said counting mechanism is not in zero condition, and normally ineiiective locking means for said value introducing means adapted to be rendered effective by the movement ofsaid operating means prior to its arrest by said feeler means.

14. In a machine of the class described, a counting mechanism, means for introducing values into said counting mechanism, a .clear sign printing mechanism, normally tensioned and latched operating means for said printing mechanism, means for releasing said operating means at a denite stage in the normal operation of the machine, feeler means controlled by said counting mechanism to arrest said operating means before its motion to operate said printing means is completed when said counting mechanism is operating means are restrained by said feeler means.

15. In a machine of the class described, a counting mechanism, means for introducing values into said counting mechanism, a "clear" sign printing mechanism, normally prepared powerdrlven operating means therefor, a member having a progressive movement during the normal operation of the machine, means adapted to be actuated by said member for starting said operating means, feeler mechanism cooperating with said counting mechanism and adapted to restrain said operating means when the counting mechanism is not at zero, and normally ineffective locking means for said value introducing means adapted to be rendered effective by said operating means when the latter is released, one part of said locking means being mounted on said feeler means.

16. In a machine of the class described, a counting mechanism, means for introducing values into said counting mechanism, a clear sign printing mechanism, 'normally prepared power driven operating means therefor, a member having a progressive movement during the normal operation of the machine, means adapted to be actuated by said member for starting said operating means, feeler mechanism cooperating with said counting mechanism and adapted to restrain said operating means when the counting mechanism is not at zero, and normally ineffective locking means for said value introducing means adapted to be rendered eiective by said operating means when the latter is released, one part of said locking" means being^mounted on said feeler` means, said feeler means having a suilicient motion even when said counting mechanism is not in zero condition to move said part of said locking means to operative position.

17. In a machine of the class described, a

counting mechanism, means for introducing val-l ues into said counting mechanism, a.v clear" sign printing mechanism, normally prepared power driven operatingmeans therefor, a member having a progressive movement during the normal operation of the machine, means adapted to be actuated by said member for starting said operating means, feeler mechanism cooperating with said counting mechanism and adapted to restrain said operating means when the counting mechanism ,is not at zero, and normally ineffective locking means for said value introducing means adapted to be rendered effective by said operating means when the latter is released, said locking means comprising one or more pins on said feeler adaptedV to be moved into the path of a part of said counting mechanism which is moved in the normal operation of the latter.

18. In a machine of the class described, a. counting mechanism. means for introducing values into said counting mechanism, a clear sign printing mechanism., normally prepared power driven operating means therefor, a member'having a progressive movement during the normal operation of the machine, means adapted to be actuated by said member for starting said operating means, feeler mechanism cooperating with said counting mechanism and adapted to restrain said operating means when the counting mechanism is not at zero, and normally ineffective locking means for said value introducing means adapted to be rendered effective by said operating means when the latter is released, said printing mechanism and said operating means being coupled by a lost motion connection which permits movement of said n locking means to operative position without operating said printing mechanism.

counting mechanism, a clear" sign printing mechanism, operating means therefor, an energy storing device, connections whereby energy from said energy storing device is transmitted to said operating means to move the same, andmeans for restoring energy to said energy storing device from said printing mechanism during the operation of the latter.

21. In a machine of the class described, a counting mechanism; a paper carriage; a clear" sign printing mechanism comprising a power driven shaft, a type bar, normally disconnected coupling means between said type bar and shaft, and an operating lever adapted to connect said coupling means to said shaft; operating means connected to said operating lever and including energy storing driving means influencing said operating means toward position to actuate said operating lever, holding means for said operating means, means for automatically releasing said holding means at a certain Stage in the operation of the machine, and connections between 22. In a machine of the class described, a counting mechanism; a paper carriage; a clear sign printing mechanism comprising a power driven shaft, a type bar, normally disconnected coupling means between said type bar and shaft,

and an operating lever adapted to connect said coupling means to said shaft; operating means connected to said operating lever and including energy storing driving means inuencing said operating'means toward position to actuate said operating lever, holding means for said operating means, means for automatically releasing said holding means at a certain stage in the operation of the machine, and connections between said coupling and operating means whereby an operative motion of the former returns the latter to position of rest and restores the energy of said driving means, said last mentioned connections including a shock absorbing spring.

23. In a machine of the class described, a counting mechanism, a member having a continued forward movement during the successive steps of the normal operation of said machine,

printing members including a clear sign printl ing'mechanism, automatic operating means for said printing mechanism, means actuated by said first-named member during its forward movement to start said operating means, and control mechanism for making the actuation of said clear sign printing means dependent upon the numeral indicators of said counting mechanism being in zero position.

24. In a typewriting calculating machine, a counting mechanism comprising a set oiv counting elements for a plurality of orders, mechanism for printing numerals and shifting said counting elements accordingly one order at a time, means for printing a distinctive sign, a member having a continued forward movement during the successive steps of normal operation of the machine, automatic operating means for said distinctive sign printing means, and means actuated by said' member during its forward movement to start said automatic operating means, anda supplementary control for said actuating means to render the same dependent upon the condi- 1 tion' of said counting mechanism.

CARL scmNs. 

